Willem de Ridder documents early 60s

Includes: Invitation card and programme leaflet (2x) to the first MES concert Feb. 1962 in De Lantaren, Rotterdam. + Announcement leaflet for Fluxus event at De Kleine Komedie, Amsterdam, December 18 1963, organized by Willem de Ridder, Emmett Williams, Tomas Schmit and Wim T. Schippers. Black offset on green paper. 31 x 21 cm, 4 pp. Folded once, heavily toned around margins.

+ Information leaflets and promotional material for organisations set up by De Ridder such as Amstel 47, S.E.O. Society for Exhibition Organizing and Afsrinmor (Association for scientific research in new methods of recreation) + Do It Yourself paper constellation project by de Ridder published in a Dutch newspaper, this version created by Tjeerd Deelstra (or one of his children). (total 9)